Electrodes with High Conductivities for High Performance Lithium/Sodium Ion Batteries

Yan, Litao; Wang, Haizhen; Huang, Di; Luo, Hongmei

doi:10.30919/es.180318

Cited by 32 publications

(15 citation statements)

References 108 publications

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“…Although many more studies need to be done, the evolution of cells in HPFIM contributes to the understanding of the nucleation and growth mechanism in the foam injection molding and a new strategy for the fabrication of foam with uniform cell structure is provided. With the addition of unique nanofillers, this process can be potentially used for producing multifunctional polymer nanocomposites to satisfy various applications including energy storage, environmental remediation, electromagnetic interference (EMI) shielding, and sensing …”

Section: Resultsmentioning

confidence: 99%

Polystyrene Foam with High Cell Density and Small Cell Size by Compression‐Injection Molding and Core Back Foaming Technique: Evolution of Cells in Cavity

Bai

Dong

Xiao

et al. 2018

Macro Materials & Eng

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Many efforts have been made to obtain uniform cell structures from foam injection molding techniques. However, cell nucleation mechanism and complex dynamics during the cell formation have rarely been well understood. Here, high‐pressure foam injection molding (HPFIM) is achieved by combining the injection–compression molding with core back foaming (ICMCBF) technique. The influences of compression pressure and time on the cell structure of polystyrene foam during the foaming process are studied. Compared with low pressure for conventional foam injection molding, high compression pressure (200 bar) and fast pressure drop rate of ICMCBF endow the foam with the highest cell density (1.59 × 107 cells cm−3), and the smallest cell size (15 µm). The tensile strength and impact strength are enhanced by about 60% (from 22.3 to 35.6 MPa) and 80% (from 3.6 to 6.8 MPa), respectively. This study gives a critical understanding of the cell nucleation and growth mechanism of the foam injection molding and supplies a new strategy for the fabrication of foam with uniform cell structure.

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Section: Resultsmentioning

confidence: 99%

Polystyrene Foam with High Cell Density and Small Cell Size by Compression‐Injection Molding and Core Back Foaming Technique: Evolution of Cells in Cavity

Bai

Dong

Xiao

et al. 2018

Macro Materials & Eng

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“…Additionally, the morphological and structural evolutions of WAIM–molded polyolefin parts in the presence of NAs as well as fillers are still unclear. Especially, the mutifunctions are desired to satisfy various applications including sensing, structural materials, energy, electromagnetic interference (EMI) shielding, environmental remediation, etc . Therefore, additional efforts have to be made to further investigate and improve the WAIM technology for producing various nanocomposite parts.…”

Section: Discussionmentioning

confidence: 99%

Overview of the Experimental Trends in Water‐Assisted Injection Molding

Liu

Pan

Zheng

et al. 2018

Macro Materials & Eng

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In recent years, a new and promising polymer processing technology known as water‐assisted injection molding (WAIM) has attracted attention not only for academic reasons but also for its industrial applications. WAIM technology provides a new way to fabricate hollow or other complicated products due to its faster cycling time and light weight. This paper aims to give an overview of the basic principles and applications of WAIM as well as the current research status in academia. The origin and development of WAIM technology are first described and then, their advantages and applications are given. This review focuses on the experimental trends of WAIM such as computer simulation, the effect of processing parameters on the WAIM samples, and the morphology as well as related WAIM–molded composites and polymer blends' work.

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“…The PEO (M w = 6 × 10 5 g mol −1 ), PMMA (M w = 3.5 × 10 5 g mol −1 ), LiBF 4 and MMT nanoclay (PGV; Nanocor ® ) were obtained from Sigma-Aldrich, USA. Acetonitrile and tetrahydrofuran of spectroscopic grade were purchased from Loba Chemie, India and used as solvents.…”

Section: Materials and Sample Preparationmentioning

confidence: 99%

“…Among the various types of energy storing devices, the solid-state lithium-ion batteries (LIBs) have gained great success due to their promising commercial applications [1][2][3]. The overall performance of the LIBs depends on the synergic properties of the electrodes (anode and cathode) and the electrolyte material used in their design and development [4][5][6][7][8][9][10][11][12][13][14]. The electrolyte material acts as an ion conductor/separator between the electrodes and governs most of the electrochemical parameters of a battery including its high-performance and safer workability.…”

Section: Introductionmentioning

confidence: 99%

Effectively improved ionic conductivity of montmorillonite clay nanoplatelets incorporated nanocomposite solid polymer electrolytes for lithium ion-conducting devices

2018

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Synergistic effects of lithium salt concentration and inorganic nanofiller incorporation on the ionic conductivity of polymer blend matrix based nanocomposite solid polymer electrolytes (NSPEs) have been examined. The montmorillonite (MMT) clay nanoplatelets incorporated NSPE films based on poly(ethylene oxide) and poly(methyl methacrylate) blend matrix with lithium tetrafluoroborate (LiBF 4) ionic salt have been prepared by the solution-cast method followed by melt-press technique. The 1, 3, and 5 wt% MMT amounts along with 13.3 wt% LiBF 4 amount as compared to the weight of polymer blend have been used for the preparation of NSPE films. X-ray diffractometer (XRD) and the Fourier transform infrared (FTIR) spectrometer have been employed for structural characterization of these NSPE films. The complex permittivity and ac electrical conductivity spectra are investigated by using the dielectric relaxation spectroscopy, whereas the electrochemical performance of these materials has been characterized by the electrochemical analyzer. The XRD patterns reveal that the NSPEs are predominantly amorphous and have the intercalated and exfoliated MMT platelets, whereas the relative changes in their FTIR spectra confirm the ion-dipolar-nanofiller interactions between the functional groups of the blended polymers, lithium ions, and the MMT nanoplatelets. The permittivity and conductivity spectra of these materials are analyzed for exploring the dominant contribution of electrode polarization and dipolar polarization in the low and high frequency regions, respectively, and the presence of relaxation processes associated with structural dynamics of the solid-state ion-dipolar complexes. It has been found that the NSPE of relatively fast polymer chain segmental dynamics exhibits higher ionic conductivity. The room temperature ionic conductivity of the 13.3 wt% LiBF 4 containing SPE is found more than two times higher as compared to that of the SPE film having 9.7 wt% LiBF 4. When the MMT is incorporated, the ionic conductivity of 13.3 wt% LiBF 4 containing NSPEs enhances by about one order of magnitude at room temperature. The dc ionic conductivity of the 13.3 wt% LiBF 4 containing SPE film is found 1 × 10-5 S/ cm at 55 °C, whereas it is 1.65 × 10-5 S/cm at 27 °C for the 5 wt% MMT incorporated NSPE film. The significantly enhanced ionic conductivity with ions transference number close to unity, high electrochemical stability voltage window and good reversibility of these NSPE materials confirm their potential applications as ion conductor/separator for the development of all-solid-state ion conducting devices and the lithium-ion batteries.

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Electrodes with High Conductivities for High Performance Lithium/Sodium Ion Batteries

Cited by 32 publications

References 108 publications

Polystyrene Foam with High Cell Density and Small Cell Size by Compression‐Injection Molding and Core Back Foaming Technique: Evolution of Cells in Cavity

Polystyrene Foam with High Cell Density and Small Cell Size by Compression‐Injection Molding and Core Back Foaming Technique: Evolution of Cells in Cavity

Overview of the Experimental Trends in Water‐Assisted Injection Molding

Effectively improved ionic conductivity of montmorillonite clay nanoplatelets incorporated nanocomposite solid polymer electrolytes for lithium ion-conducting devices

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